Quantum many-body theory

We focus on the development of theoretical methodology to study non-equilibrium quantum systems. These techniques involve diagrammatic perturbation theory and time-dependent density functional theory. We currently focus on the description of electron-phonon and electron-photon systems and in particular on time-resolved spectroscopies. A very recent focus is the development of quantum algorithms to simulate quantum many-body systems on quantum computers.
Time-resolved spectrospies

Table of contents

Research group type
Research group
Core fields of research
Basic natural phenomena and mathematical thinking
Research areas
Second quantum revolution
Nanoscience Center
Materials physics
Faculty
Faculty of Mathematics and Science
Department
Department of Physics

Research group description

We focus on the development of theoretical methodology to study non-equilibrium quantum systems, such as molecules and solids exposed to strong laser pulses and the description of time-resolved spectroscopies. The theoretical techniques involve diagrammatic perturbation theory and time-dependent density functional theory. A recent additional focus is to develop quantum algorithms to simulate strongly correlated quantum many-body systems on quantum computers.

Research topics

  • Nonequilibrium many-body theory for electrons and phonons/photons
  • Time-resolved spectroscopies
  • Non-equilibrium Green functions and time-dependent density-functional theory
  • Quantum computing and quantum lattice systems

Publications

Publication
2020

Physical Review B
Pavlyukh, Yaroslav
Stefanucci, Gianluca
van Leeuwen, Robert
Publication
2020

Physical Review B
Härkönen, Ville J.
van Leeuwen, Robert
Gross, E. K. U.
Publication
2019

Journal of Physics A: Mathematical and Theoretical
Hyrkäs, Markku
Karlsson, Daniel
van Leeuwen, Robert
Publication
2019

Physica Status Solidi. B: Basic Research
Hyrkäs, Markku
Karlsson, Daniel
van Leeuwen, Robert
Publication
2019

New Journal of Physics
Tuovinen, Riku
Perfetto, Enrico
van Leeuwen, Robert
Stefanucci, Gianluca
Sentef, Michael A.
Publication
2019

Physical Review A
Cort Barrada, Luis
Nielsen, Soeren Ersbak Bang
van Leeuwen, Robert
Publication
2018

European Physical Journal B
Giesbertz, Klaas J. H.
Uimonen, Anna-Maija
van Leeuwen, Robert
Publication
2018

Handbook of Materials Modeling. Methods : Theory and Modeling
Karlsson, Daniel
van Leeuwen, Robert
Publication
2018

European Physical Journal B
Nielsen, Soeren E. B.
Ruggenthaler, Michael
van Leeuwen, Robert
Publication
2018

Physical Review B
Karlsson, Daniel
van Leeuwen, Robert
Perfetto, Enrico
Stefanucci, Gianluca
Publication
2017

Physical Review A
Cort Barrada, Luis
Karlsson, Daniel
Lani, Giovanna
van Leeuwen, Robert
Publication
2016

Progress in Non-equilibrium Green's Functions
Lynn, Richard
van Leeuwen, Robert

Teaching

Lectures notes on electrodynamics

Research group

Group leaders

Robert van Leeuwen

Professor

Members

Janne Nevalaita

Senior Researcher

Joona Marjamäki

Doctoral Researcher
Daniele Cuomo

Daniele Cuomo

Postdoctoral Researcher